Cameron R. Smith, Eric M. Bunnelle, A. J. Rhodes
Feb 20, 2007
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Organic letters
Abstract
Indolizine, pyrrolone, and indolizinone heterocycles are easily accessed via the Pt(II)-catalyzed cycloisomerization or a tandem cyclization/1,2-migration of pyridine propargylic alcohols and derivatives. This method provides an efficient synthesis of highly functionalized heterocycles from readily available substrates. [reaction: see text]